Police and parks and wildlife staff took over an hour to persuade a mountain lion to leave a Boulder, Colo., home on Thursday night.

The feline entered the empty home through a screen door and killed a housecat, Boulder police tweeted.

Last night, a mountain lion entered a home on Marine St through a screen door, No people were injured but a house cat was killed. Please keep ground level doors and windows closed and locked at night and when you are not home. (This is also good advice for bears and burglars.) pic.twitter.com/cGseNpx2LI